./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/stack_longest-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/stack_longest-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash da1e2fd74a3b82adf9cb4716d4d9f6eb54f80337 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 00:07:11,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 00:07:11,750 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 00:07:11,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 00:07:11,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 00:07:11,789 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 00:07:11,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 00:07:11,794 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 00:07:11,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 00:07:11,798 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 00:07:11,799 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 00:07:11,801 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 00:07:11,801 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 00:07:11,803 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 00:07:11,804 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 00:07:11,806 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 00:07:11,808 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 00:07:11,809 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 00:07:11,811 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 00:07:11,814 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 00:07:11,816 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 00:07:11,821 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 00:07:11,822 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 00:07:11,824 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 00:07:11,827 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 00:07:11,828 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 00:07:11,828 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 00:07:11,829 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 00:07:11,830 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 00:07:11,832 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 00:07:11,832 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 00:07:11,833 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 00:07:11,834 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 00:07:11,835 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 00:07:11,837 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 00:07:11,837 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 00:07:11,838 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 00:07:11,839 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 00:07:11,839 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 00:07:11,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 00:07:11,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 00:07:11,844 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 00:07:11,904 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 00:07:11,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 00:07:11,909 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 00:07:11,910 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 00:07:11,910 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 00:07:11,911 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 00:07:11,911 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 00:07:11,911 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 00:07:11,912 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 00:07:11,912 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 00:07:11,913 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 00:07:11,914 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 00:07:11,914 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 00:07:11,914 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 00:07:11,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 00:07:11,915 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 00:07:11,915 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 00:07:11,915 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 00:07:11,916 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 00:07:11,916 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 00:07:11,916 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 00:07:11,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 00:07:11,917 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 00:07:11,917 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 00:07:11,918 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 00:07:11,918 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 00:07:11,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 00:07:11,918 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 00:07:11,919 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 00:07:11,919 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da1e2fd74a3b82adf9cb4716d4d9f6eb54f80337 [2020-10-26 00:07:12,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 00:07:12,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 00:07:12,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 00:07:12,487 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 00:07:12,488 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 00:07:12,489 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/stack_longest-1.i [2020-10-26 00:07:12,585 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97e6a8059/9690de5c6c0d4a058c3ec60421b06575/FLAG4c3077288 [2020-10-26 00:07:13,382 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 00:07:13,383 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longest-1.i [2020-10-26 00:07:13,414 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97e6a8059/9690de5c6c0d4a058c3ec60421b06575/FLAG4c3077288 [2020-10-26 00:07:13,609 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97e6a8059/9690de5c6c0d4a058c3ec60421b06575 [2020-10-26 00:07:13,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 00:07:13,620 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 00:07:13,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 00:07:13,622 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 00:07:13,627 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 00:07:13,628 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:07:13" (1/1) ... [2020-10-26 00:07:13,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c3f15c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:07:13, skipping insertion in model container [2020-10-26 00:07:13,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:07:13" (1/1) ... [2020-10-26 00:07:13,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 00:07:13,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 00:07:14,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:07:14,376 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 00:07:14,438 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:07:14,612 INFO L208 MainTranslator]: Completed translation [2020-10-26 00:07:14,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:07:14 WrapperNode [2020-10-26 00:07:14,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 00:07:14,615 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 00:07:14,615 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 00:07:14,615 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 00:07:14,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:07:14" (1/1) ... [2020-10-26 00:07:14,647 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:07:14" (1/1) ... [2020-10-26 00:07:14,685 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 00:07:14,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 00:07:14,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 00:07:14,686 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 00:07:14,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:07:14" (1/1) ... [2020-10-26 00:07:14,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:07:14" (1/1) ... [2020-10-26 00:07:14,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:07:14" (1/1) ... [2020-10-26 00:07:14,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:07:14" (1/1) ... [2020-10-26 00:07:14,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:07:14" (1/1) ... [2020-10-26 00:07:14,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:07:14" (1/1) ... [2020-10-26 00:07:14,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:07:14" (1/1) ... [2020-10-26 00:07:14,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 00:07:14,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 00:07:14,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 00:07:14,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 00:07:14,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:07:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 00:07:14,829 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-10-26 00:07:14,830 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-10-26 00:07:14,830 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-10-26 00:07:14,830 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-10-26 00:07:14,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 00:07:14,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 00:07:14,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 00:07:14,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 00:07:14,831 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-26 00:07:14,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 00:07:14,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 00:07:14,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 00:07:14,834 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-26 00:07:15,456 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 00:07:15,457 INFO L298 CfgBuilder]: Removed 30 assume(true) statements. [2020-10-26 00:07:15,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:07:15 BoogieIcfgContainer [2020-10-26 00:07:15,460 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 00:07:15,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 00:07:15,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 00:07:15,469 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 00:07:15,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 12:07:13" (1/3) ... [2020-10-26 00:07:15,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68363a65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:07:15, skipping insertion in model container [2020-10-26 00:07:15,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:07:14" (2/3) ... [2020-10-26 00:07:15,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68363a65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:07:15, skipping insertion in model container [2020-10-26 00:07:15,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:07:15" (3/3) ... [2020-10-26 00:07:15,474 INFO L111 eAbstractionObserver]: Analyzing ICFG stack_longest-1.i [2020-10-26 00:07:15,488 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-26 00:07:15,488 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 00:07:15,495 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-26 00:07:15,496 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-26 00:07:15,535 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,536 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,536 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,536 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,537 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,537 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,537 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,538 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,538 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,538 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,539 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,539 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,539 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,540 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,540 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,540 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,541 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,541 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,541 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,541 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,542 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,542 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,542 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,543 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,544 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,544 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,545 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,545 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,545 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,546 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,546 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,546 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,546 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,547 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,547 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,547 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,548 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,548 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,548 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,549 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,549 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,549 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,550 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,550 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,550 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,550 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,551 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,551 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,551 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,552 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,552 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,552 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,553 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,553 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,553 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,553 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,554 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,554 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,554 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,555 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,555 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,555 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,556 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,556 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,556 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,557 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,557 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,557 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,557 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,558 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,558 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,558 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,560 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,560 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,560 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,560 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,561 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,561 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,561 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,562 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,562 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,562 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,563 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,563 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,563 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,564 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,564 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,564 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,565 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,565 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,565 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,565 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,566 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,566 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,566 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,566 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,567 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,567 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,567 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,568 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,568 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,568 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,569 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,569 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,569 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,570 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,570 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,570 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,571 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,571 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,571 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,571 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,572 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,572 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,572 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,573 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,573 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,573 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,573 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,574 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,574 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,574 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,575 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,575 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,575 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,575 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,576 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,576 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,576 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,576 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,577 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,577 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,577 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,578 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,578 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,578 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,578 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,579 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,579 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,579 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,579 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,582 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,583 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,583 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,583 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,583 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,584 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,584 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,584 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,584 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,585 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,585 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,585 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,585 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,585 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,586 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,586 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,586 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,586 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,587 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,587 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,587 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,587 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,588 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,588 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,588 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,596 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,596 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,597 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,597 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,597 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,597 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,597 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,597 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,597 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,598 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,598 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,598 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,598 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,598 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,598 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,599 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,599 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,600 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,600 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,600 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,600 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:15,619 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-10-26 00:07:15,633 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-26 00:07:15,657 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 00:07:15,657 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 00:07:15,657 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 00:07:15,658 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 00:07:15,658 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 00:07:15,658 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 00:07:15,658 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 00:07:15,658 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 00:07:15,677 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-26 00:07:15,679 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 152 places, 159 transitions, 340 flow [2020-10-26 00:07:15,683 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 152 places, 159 transitions, 340 flow [2020-10-26 00:07:15,685 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 152 places, 159 transitions, 340 flow [2020-10-26 00:07:15,806 INFO L129 PetriNetUnfolder]: 13/159 cut-off events. [2020-10-26 00:07:15,806 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-26 00:07:15,818 INFO L80 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 159 events. 13/159 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 433 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 123. Up to 3 conditions per place. [2020-10-26 00:07:15,830 INFO L116 LiptonReduction]: Number of co-enabled transitions 7732 [2020-10-26 00:07:18,168 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2020-10-26 00:07:18,954 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 35 [2020-10-26 00:07:19,482 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-26 00:07:19,646 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-26 00:07:20,903 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 143 DAG size of output: 133 [2020-10-26 00:07:21,377 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-26 00:07:21,437 INFO L131 LiptonReduction]: Checked pairs total: 12409 [2020-10-26 00:07:21,437 INFO L133 LiptonReduction]: Total number of compositions: 150 [2020-10-26 00:07:21,443 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 41 transitions, 104 flow [2020-10-26 00:07:21,470 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 335 states. [2020-10-26 00:07:21,472 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states. [2020-10-26 00:07:21,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-26 00:07:21,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:07:21,480 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-26 00:07:21,480 INFO L429 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:07:21,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:07:21,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1799512577, now seen corresponding path program 1 times [2020-10-26 00:07:21,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:07:21,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918273185] [2020-10-26 00:07:21,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:07:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:21,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:21,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918273185] [2020-10-26 00:07:21,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:07:21,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:07:21,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854298765] [2020-10-26 00:07:21,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 00:07:21,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:07:21,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 00:07:21,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 00:07:21,862 INFO L87 Difference]: Start difference. First operand 335 states. Second operand 3 states. [2020-10-26 00:07:21,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:07:21,948 INFO L93 Difference]: Finished difference Result 602 states and 1541 transitions. [2020-10-26 00:07:21,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 00:07:21,950 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-26 00:07:21,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:07:21,974 INFO L225 Difference]: With dead ends: 602 [2020-10-26 00:07:21,975 INFO L226 Difference]: Without dead ends: 580 [2020-10-26 00:07:21,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 00:07:22,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-10-26 00:07:22,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 427. [2020-10-26 00:07:22,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2020-10-26 00:07:22,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 1148 transitions. [2020-10-26 00:07:22,073 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 1148 transitions. Word has length 6 [2020-10-26 00:07:22,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:07:22,074 INFO L481 AbstractCegarLoop]: Abstraction has 427 states and 1148 transitions. [2020-10-26 00:07:22,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 00:07:22,074 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 1148 transitions. [2020-10-26 00:07:22,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-26 00:07:22,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:07:22,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:07:22,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 00:07:22,077 INFO L429 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:07:22,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:07:22,077 INFO L82 PathProgramCache]: Analyzing trace with hash 426072580, now seen corresponding path program 1 times [2020-10-26 00:07:22,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:07:22,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056062467] [2020-10-26 00:07:22,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:07:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:22,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:22,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056062467] [2020-10-26 00:07:22,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:07:22,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:07:22,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233843566] [2020-10-26 00:07:22,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 00:07:22,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:07:22,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 00:07:22,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 00:07:22,210 INFO L87 Difference]: Start difference. First operand 427 states and 1148 transitions. Second operand 3 states. [2020-10-26 00:07:22,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:07:22,268 INFO L93 Difference]: Finished difference Result 530 states and 1370 transitions. [2020-10-26 00:07:22,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 00:07:22,269 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-26 00:07:22,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:07:22,276 INFO L225 Difference]: With dead ends: 530 [2020-10-26 00:07:22,277 INFO L226 Difference]: Without dead ends: 508 [2020-10-26 00:07:22,278 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 00:07:22,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-10-26 00:07:22,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 468. [2020-10-26 00:07:22,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-10-26 00:07:22,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 1250 transitions. [2020-10-26 00:07:22,335 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 1250 transitions. Word has length 8 [2020-10-26 00:07:22,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:07:22,336 INFO L481 AbstractCegarLoop]: Abstraction has 468 states and 1250 transitions. [2020-10-26 00:07:22,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 00:07:22,337 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 1250 transitions. [2020-10-26 00:07:22,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 00:07:22,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:07:22,339 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:07:22,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 00:07:22,340 INFO L429 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:07:22,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:07:22,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1325926744, now seen corresponding path program 1 times [2020-10-26 00:07:22,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:07:22,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010899585] [2020-10-26 00:07:22,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:07:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:22,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:22,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010899585] [2020-10-26 00:07:22,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:07:22,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:07:22,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195580241] [2020-10-26 00:07:22,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 00:07:22,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:07:22,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 00:07:22,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 00:07:22,458 INFO L87 Difference]: Start difference. First operand 468 states and 1250 transitions. Second operand 3 states. [2020-10-26 00:07:22,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:07:22,482 INFO L93 Difference]: Finished difference Result 504 states and 1343 transitions. [2020-10-26 00:07:22,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 00:07:22,483 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-26 00:07:22,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:07:22,488 INFO L225 Difference]: With dead ends: 504 [2020-10-26 00:07:22,488 INFO L226 Difference]: Without dead ends: 504 [2020-10-26 00:07:22,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 00:07:22,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2020-10-26 00:07:22,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 504. [2020-10-26 00:07:22,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 504 states. [2020-10-26 00:07:22,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 1343 transitions. [2020-10-26 00:07:22,523 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 1343 transitions. Word has length 10 [2020-10-26 00:07:22,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:07:22,524 INFO L481 AbstractCegarLoop]: Abstraction has 504 states and 1343 transitions. [2020-10-26 00:07:22,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 00:07:22,524 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 1343 transitions. [2020-10-26 00:07:22,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-26 00:07:22,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:07:22,531 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:07:22,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 00:07:22,531 INFO L429 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:07:22,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:07:22,533 INFO L82 PathProgramCache]: Analyzing trace with hash 246837902, now seen corresponding path program 1 times [2020-10-26 00:07:22,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:07:22,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142967433] [2020-10-26 00:07:22,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:07:22,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:22,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:22,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142967433] [2020-10-26 00:07:22,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412984790] [2020-10-26 00:07:22,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 00:07:22,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:22,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 00:07:22,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 00:07:22,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:22,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 00:07:22,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-10-26 00:07:22,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211806553] [2020-10-26 00:07:22,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 00:07:22,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:07:22,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 00:07:22,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 00:07:22,977 INFO L87 Difference]: Start difference. First operand 504 states and 1343 transitions. Second operand 7 states. [2020-10-26 00:07:23,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:07:23,112 INFO L93 Difference]: Finished difference Result 940 states and 2424 transitions. [2020-10-26 00:07:23,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 00:07:23,113 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-10-26 00:07:23,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:07:23,120 INFO L225 Difference]: With dead ends: 940 [2020-10-26 00:07:23,121 INFO L226 Difference]: Without dead ends: 940 [2020-10-26 00:07:23,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-26 00:07:23,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2020-10-26 00:07:23,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 688. [2020-10-26 00:07:23,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 688 states. [2020-10-26 00:07:23,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1842 transitions. [2020-10-26 00:07:23,151 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1842 transitions. Word has length 14 [2020-10-26 00:07:23,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:07:23,152 INFO L481 AbstractCegarLoop]: Abstraction has 688 states and 1842 transitions. [2020-10-26 00:07:23,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 00:07:23,152 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1842 transitions. [2020-10-26 00:07:23,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-26 00:07:23,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:07:23,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:07:23,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 00:07:23,369 INFO L429 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:07:23,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:07:23,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1088801954, now seen corresponding path program 1 times [2020-10-26 00:07:23,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:07:23,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199727450] [2020-10-26 00:07:23,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:07:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:23,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:23,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199727450] [2020-10-26 00:07:23,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:07:23,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:07:23,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509094394] [2020-10-26 00:07:23,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 00:07:23,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:07:23,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 00:07:23,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 00:07:23,409 INFO L87 Difference]: Start difference. First operand 688 states and 1842 transitions. Second operand 3 states. [2020-10-26 00:07:23,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:07:23,440 INFO L93 Difference]: Finished difference Result 343 states and 775 transitions. [2020-10-26 00:07:23,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 00:07:23,440 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-26 00:07:23,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:07:23,443 INFO L225 Difference]: With dead ends: 343 [2020-10-26 00:07:23,443 INFO L226 Difference]: Without dead ends: 339 [2020-10-26 00:07:23,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 00:07:23,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2020-10-26 00:07:23,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 313. [2020-10-26 00:07:23,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-10-26 00:07:23,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 700 transitions. [2020-10-26 00:07:23,453 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 700 transitions. Word has length 16 [2020-10-26 00:07:23,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:07:23,454 INFO L481 AbstractCegarLoop]: Abstraction has 313 states and 700 transitions. [2020-10-26 00:07:23,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 00:07:23,454 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 700 transitions. [2020-10-26 00:07:23,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-26 00:07:23,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:07:23,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:07:23,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 00:07:23,456 INFO L429 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:07:23,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:07:23,456 INFO L82 PathProgramCache]: Analyzing trace with hash 678030022, now seen corresponding path program 1 times [2020-10-26 00:07:23,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:07:23,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987604052] [2020-10-26 00:07:23,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:07:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:23,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:23,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987604052] [2020-10-26 00:07:23,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:07:23,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 00:07:23,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306250349] [2020-10-26 00:07:23,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:07:23,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:07:23,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:07:23,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:07:23,572 INFO L87 Difference]: Start difference. First operand 313 states and 700 transitions. Second operand 5 states. [2020-10-26 00:07:23,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:07:23,698 INFO L93 Difference]: Finished difference Result 473 states and 1056 transitions. [2020-10-26 00:07:23,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:07:23,699 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-26 00:07:23,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:07:23,703 INFO L225 Difference]: With dead ends: 473 [2020-10-26 00:07:23,703 INFO L226 Difference]: Without dead ends: 473 [2020-10-26 00:07:23,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 00:07:23,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2020-10-26 00:07:23,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 351. [2020-10-26 00:07:23,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-10-26 00:07:23,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 791 transitions. [2020-10-26 00:07:23,718 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 791 transitions. Word has length 17 [2020-10-26 00:07:23,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:07:23,719 INFO L481 AbstractCegarLoop]: Abstraction has 351 states and 791 transitions. [2020-10-26 00:07:23,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:07:23,719 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 791 transitions. [2020-10-26 00:07:23,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-26 00:07:23,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:07:23,721 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:07:23,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 00:07:23,721 INFO L429 AbstractCegarLoop]: === Iteration 7 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:07:23,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:07:23,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1325689153, now seen corresponding path program 1 times [2020-10-26 00:07:23,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:07:23,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111099887] [2020-10-26 00:07:23,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:07:23,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:24,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:24,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111099887] [2020-10-26 00:07:24,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:07:24,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 00:07:24,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176631592] [2020-10-26 00:07:24,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 00:07:24,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:07:24,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 00:07:24,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-26 00:07:24,123 INFO L87 Difference]: Start difference. First operand 351 states and 791 transitions. Second operand 9 states. [2020-10-26 00:07:24,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:07:24,571 INFO L93 Difference]: Finished difference Result 653 states and 1454 transitions. [2020-10-26 00:07:24,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 00:07:24,572 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-26 00:07:24,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:07:24,577 INFO L225 Difference]: With dead ends: 653 [2020-10-26 00:07:24,577 INFO L226 Difference]: Without dead ends: 653 [2020-10-26 00:07:24,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-26 00:07:24,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2020-10-26 00:07:24,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 484. [2020-10-26 00:07:24,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2020-10-26 00:07:24,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 1129 transitions. [2020-10-26 00:07:24,596 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 1129 transitions. Word has length 21 [2020-10-26 00:07:24,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:07:24,597 INFO L481 AbstractCegarLoop]: Abstraction has 484 states and 1129 transitions. [2020-10-26 00:07:24,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 00:07:24,597 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 1129 transitions. [2020-10-26 00:07:24,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-26 00:07:24,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:07:24,599 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:07:24,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 00:07:24,599 INFO L429 AbstractCegarLoop]: === Iteration 8 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:07:24,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:07:24,600 INFO L82 PathProgramCache]: Analyzing trace with hash 308487363, now seen corresponding path program 2 times [2020-10-26 00:07:24,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:07:24,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315485292] [2020-10-26 00:07:24,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:07:24,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:25,317 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 32 [2020-10-26 00:07:25,473 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 20 [2020-10-26 00:07:25,667 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 20 [2020-10-26 00:07:25,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:25,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315485292] [2020-10-26 00:07:25,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:07:25,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 00:07:25,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769827469] [2020-10-26 00:07:25,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 00:07:25,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:07:25,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 00:07:25,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-26 00:07:25,753 INFO L87 Difference]: Start difference. First operand 484 states and 1129 transitions. Second operand 9 states. [2020-10-26 00:07:26,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:07:26,317 INFO L93 Difference]: Finished difference Result 765 states and 1739 transitions. [2020-10-26 00:07:26,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 00:07:26,318 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-26 00:07:26,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:07:26,322 INFO L225 Difference]: With dead ends: 765 [2020-10-26 00:07:26,323 INFO L226 Difference]: Without dead ends: 765 [2020-10-26 00:07:26,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-26 00:07:26,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2020-10-26 00:07:26,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 470. [2020-10-26 00:07:26,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2020-10-26 00:07:26,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 1092 transitions. [2020-10-26 00:07:26,340 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 1092 transitions. Word has length 21 [2020-10-26 00:07:26,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:07:26,341 INFO L481 AbstractCegarLoop]: Abstraction has 470 states and 1092 transitions. [2020-10-26 00:07:26,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 00:07:26,341 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 1092 transitions. [2020-10-26 00:07:26,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-26 00:07:26,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:07:26,342 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-10-26 00:07:26,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 00:07:26,343 INFO L429 AbstractCegarLoop]: === Iteration 9 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:07:26,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:07:26,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1898624995, now seen corresponding path program 2 times [2020-10-26 00:07:26,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:07:26,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102915698] [2020-10-26 00:07:26,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:07:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:26,420 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:26,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102915698] [2020-10-26 00:07:26,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724610432] [2020-10-26 00:07:26,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 00:07:26,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-26 00:07:26,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 00:07:26,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-26 00:07:26,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 00:07:26,583 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:26,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 00:07:26,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-10-26 00:07:26,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975249460] [2020-10-26 00:07:26,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 00:07:26,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:07:26,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 00:07:26,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-26 00:07:26,586 INFO L87 Difference]: Start difference. First operand 470 states and 1092 transitions. Second operand 9 states. [2020-10-26 00:07:26,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:07:26,688 INFO L93 Difference]: Finished difference Result 778 states and 1761 transitions. [2020-10-26 00:07:26,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 00:07:26,689 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-10-26 00:07:26,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:07:26,694 INFO L225 Difference]: With dead ends: 778 [2020-10-26 00:07:26,695 INFO L226 Difference]: Without dead ends: 778 [2020-10-26 00:07:26,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-26 00:07:26,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2020-10-26 00:07:26,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 560. [2020-10-26 00:07:26,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-10-26 00:07:26,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 1291 transitions. [2020-10-26 00:07:26,716 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 1291 transitions. Word has length 22 [2020-10-26 00:07:26,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:07:26,716 INFO L481 AbstractCegarLoop]: Abstraction has 560 states and 1291 transitions. [2020-10-26 00:07:26,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 00:07:26,717 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 1291 transitions. [2020-10-26 00:07:26,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-26 00:07:26,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:07:26,718 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:07:26,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 00:07:26,934 INFO L429 AbstractCegarLoop]: === Iteration 10 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:07:26,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:07:26,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1380091070, now seen corresponding path program 1 times [2020-10-26 00:07:26,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:07:26,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342807703] [2020-10-26 00:07:26,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:07:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 00:07:26,970 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 00:07:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 00:07:27,007 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 00:07:27,040 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 00:07:27,040 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-26 00:07:27,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 00:07:27,041 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-26 00:07:27,042 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-26 00:07:27,050 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [638] [638] L983-6-->L951: Formula: (let ((.cse1 (select |#pthreadsMutex_In-1097912742| |~#m~0.base_In-1097912742|)) (.cse0 (mod t1Thread1of1ForFork0_~tmp~0_Out-1097912742 4294967296))) (and (= t1Thread1of1ForFork0_assume_abort_if_not_~cond_Out-1097912742 |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond_Out-1097912742|) (= |t1Thread1of1ForFork0_push_#in~x_Out-1097912742| .cse0) (< t1Thread1of1ForFork0_~i~0_In-1097912742 800) (= |#pthreadsMutex_Out-1097912742| (store |#pthreadsMutex_In-1097912742| |~#m~0.base_In-1097912742| (store .cse1 |~#m~0.offset_In-1097912742| 1))) (= t1Thread1of1ForFork0_~tmp~0_Out-1097912742 |t1Thread1of1ForFork0_#t~nondet46_In-1097912742|) (= |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond_Out-1097912742| 1) (= |t1Thread1of1ForFork0_push_#in~stack.base_Out-1097912742| |~#arr~0.base_In-1097912742|) (= |~#arr~0.offset_In-1097912742| |t1Thread1of1ForFork0_push_#in~stack.offset_Out-1097912742|) (= (select .cse1 |~#m~0.offset_In-1097912742|) 0) (< .cse0 800))) InVars {~#arr~0.offset=|~#arr~0.offset_In-1097912742|, #pthreadsMutex=|#pthreadsMutex_In-1097912742|, ~#m~0.base=|~#m~0.base_In-1097912742|, t1Thread1of1ForFork0_~i~0=t1Thread1of1ForFork0_~i~0_In-1097912742, ~#m~0.offset=|~#m~0.offset_In-1097912742|, t1Thread1of1ForFork0_#t~nondet46=|t1Thread1of1ForFork0_#t~nondet46_In-1097912742|, ~#arr~0.base=|~#arr~0.base_In-1097912742|} OutVars{~#arr~0.offset=|~#arr~0.offset_In-1097912742|, t1Thread1of1ForFork0_push_#in~x=|t1Thread1of1ForFork0_push_#in~x_Out-1097912742|, #pthreadsMutex=|#pthreadsMutex_Out-1097912742|, t1Thread1of1ForFork0_~i~0=t1Thread1of1ForFork0_~i~0_In-1097912742, t1Thread1of1ForFork0_push_#t~nondet36=|t1Thread1of1ForFork0_push_#t~nondet36_Out-1097912742|, t1Thread1of1ForFork0_push_~stack.offset=t1Thread1of1ForFork0_push_~stack.offset_Out-1097912742, t1Thread1of1ForFork0_push_#res=|t1Thread1of1ForFork0_push_#res_Out-1097912742|, t1Thread1of1ForFork0_push_#t~ret38=|t1Thread1of1ForFork0_push_#t~ret38_Out-1097912742|, ~#m~0.base=|~#m~0.base_In-1097912742|, t1Thread1of1ForFork0_push_~stack.base=t1Thread1of1ForFork0_push_~stack.base_Out-1097912742, t1Thread1of1ForFork0_assume_abort_if_not_~cond=t1Thread1of1ForFork0_assume_abort_if_not_~cond_Out-1097912742, t1Thread1of1ForFork0_push_#in~stack.base=|t1Thread1of1ForFork0_push_#in~stack.base_Out-1097912742|, t1Thread1of1ForFork0_~tmp~0=t1Thread1of1ForFork0_~tmp~0_Out-1097912742, t1Thread1of1ForFork0_push_~x=t1Thread1of1ForFork0_push_~x_Out-1097912742, ~#m~0.offset=|~#m~0.offset_In-1097912742|, t1Thread1of1ForFork0_#t~nondet46=|t1Thread1of1ForFork0_#t~nondet46_Out-1097912742|, t1Thread1of1ForFork0_assume_abort_if_not_#in~cond=|t1Thread1of1ForFork0_assume_abort_if_not_#in~cond_Out-1097912742|, t1Thread1of1ForFork0_push_#in~stack.offset=|t1Thread1of1ForFork0_push_#in~stack.offset_Out-1097912742|, ~#arr~0.base=|~#arr~0.base_In-1097912742|, t1Thread1of1ForFork0_#t~nondet45=|t1Thread1of1ForFork0_#t~nondet45_Out-1097912742|} AuxVars[] AssignedVars[t1Thread1of1ForFork0_push_#in~x, #pthreadsMutex, t1Thread1of1ForFork0_push_#t~nondet36, t1Thread1of1ForFork0_push_~stack.offset, t1Thread1of1ForFork0_push_#res, t1Thread1of1ForFork0_push_#t~ret38, t1Thread1of1ForFork0_push_~stack.base, t1Thread1of1ForFork0_assume_abort_if_not_~cond, t1Thread1of1ForFork0_push_#in~stack.base, t1Thread1of1ForFork0_~tmp~0, t1Thread1of1ForFork0_push_~x, t1Thread1of1ForFork0_#t~nondet46, t1Thread1of1ForFork0_assume_abort_if_not_#in~cond, t1Thread1of1ForFork0_push_#in~stack.offset, t1Thread1of1ForFork0_#t~nondet45] because there is no mapped edge [2020-10-26 00:07:27,073 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [632] [632] L1003-3-->L998-6: Formula: (and (<= 0 (+ |t2Thread1of1ForFork1_#t~ret50_In835350469| 2147483648)) (not (= (- 2) |t2Thread1of1ForFork1_#t~ret50_In835350469|)) (<= |t2Thread1of1ForFork1_#t~ret50_In835350469| 2147483647) (= |#pthreadsMutex_Out835350469| (store |#pthreadsMutex_In835350469| |~#m~0.base_In835350469| (store (select |#pthreadsMutex_In835350469| |~#m~0.base_In835350469|) |~#m~0.offset_In835350469| 0))) (= |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_In835350469| |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_Out835350469|) (= (+ t2Thread1of1ForFork1_~i~1_Out835350469 (- 1)) t2Thread1of1ForFork1_~i~1_In835350469) (= |t2Thread1of1ForFork1_reach_error_#t~nondet2.base_In835350469| |t2Thread1of1ForFork1_reach_error_#t~nondet2.base_Out835350469|)) InVars {t2Thread1of1ForFork1_reach_error_#t~nondet2.base=|t2Thread1of1ForFork1_reach_error_#t~nondet2.base_In835350469|, #pthreadsMutex=|#pthreadsMutex_In835350469|, ~#m~0.base=|~#m~0.base_In835350469|, ~#m~0.offset=|~#m~0.offset_In835350469|, t2Thread1of1ForFork1_#t~ret50=|t2Thread1of1ForFork1_#t~ret50_In835350469|, t2Thread1of1ForFork1_~i~1=t2Thread1of1ForFork1_~i~1_In835350469, t2Thread1of1ForFork1_reach_error_#t~nondet2.offset=|t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_In835350469|} OutVars{#pthreadsMutex=|#pthreadsMutex_Out835350469|, t2Thread1of1ForFork1_reach_error_#t~nondet2.base=|t2Thread1of1ForFork1_reach_error_#t~nondet2.base_Out835350469|, ~#m~0.base=|~#m~0.base_In835350469|, ~#m~0.offset=|~#m~0.offset_In835350469|, t2Thread1of1ForFork1_#t~post48=|t2Thread1of1ForFork1_#t~post48_Out835350469|, t2Thread1of1ForFork1_#t~ret50=|t2Thread1of1ForFork1_#t~ret50_Out835350469|, t2Thread1of1ForFork1_~i~1=t2Thread1of1ForFork1_~i~1_Out835350469, t2Thread1of1ForFork1_reach_error_#t~nondet2.offset=|t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_Out835350469|} AuxVars[] AssignedVars[#pthreadsMutex, t2Thread1of1ForFork1_reach_error_#t~nondet2.base, t2Thread1of1ForFork1_#t~post48, t2Thread1of1ForFork1_#t~ret50, t2Thread1of1ForFork1_~i~1, t2Thread1of1ForFork1_reach_error_#t~nondet2.offset] because there is no mapped edge [2020-10-26 00:07:27,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 12:07:27 BasicIcfg [2020-10-26 00:07:27,147 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 00:07:27,148 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 00:07:27,148 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 00:07:27,149 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 00:07:27,149 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:07:15" (3/4) ... [2020-10-26 00:07:27,153 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-26 00:07:27,159 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [638] [638] L983-6-->L951: Formula: (let ((.cse1 (select |#pthreadsMutex_In-1097912742| |~#m~0.base_In-1097912742|)) (.cse0 (mod t1Thread1of1ForFork0_~tmp~0_Out-1097912742 4294967296))) (and (= t1Thread1of1ForFork0_assume_abort_if_not_~cond_Out-1097912742 |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond_Out-1097912742|) (= |t1Thread1of1ForFork0_push_#in~x_Out-1097912742| .cse0) (< t1Thread1of1ForFork0_~i~0_In-1097912742 800) (= |#pthreadsMutex_Out-1097912742| (store |#pthreadsMutex_In-1097912742| |~#m~0.base_In-1097912742| (store .cse1 |~#m~0.offset_In-1097912742| 1))) (= t1Thread1of1ForFork0_~tmp~0_Out-1097912742 |t1Thread1of1ForFork0_#t~nondet46_In-1097912742|) (= |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond_Out-1097912742| 1) (= |t1Thread1of1ForFork0_push_#in~stack.base_Out-1097912742| |~#arr~0.base_In-1097912742|) (= |~#arr~0.offset_In-1097912742| |t1Thread1of1ForFork0_push_#in~stack.offset_Out-1097912742|) (= (select .cse1 |~#m~0.offset_In-1097912742|) 0) (< .cse0 800))) InVars {~#arr~0.offset=|~#arr~0.offset_In-1097912742|, #pthreadsMutex=|#pthreadsMutex_In-1097912742|, ~#m~0.base=|~#m~0.base_In-1097912742|, t1Thread1of1ForFork0_~i~0=t1Thread1of1ForFork0_~i~0_In-1097912742, ~#m~0.offset=|~#m~0.offset_In-1097912742|, t1Thread1of1ForFork0_#t~nondet46=|t1Thread1of1ForFork0_#t~nondet46_In-1097912742|, ~#arr~0.base=|~#arr~0.base_In-1097912742|} OutVars{~#arr~0.offset=|~#arr~0.offset_In-1097912742|, t1Thread1of1ForFork0_push_#in~x=|t1Thread1of1ForFork0_push_#in~x_Out-1097912742|, #pthreadsMutex=|#pthreadsMutex_Out-1097912742|, t1Thread1of1ForFork0_~i~0=t1Thread1of1ForFork0_~i~0_In-1097912742, t1Thread1of1ForFork0_push_#t~nondet36=|t1Thread1of1ForFork0_push_#t~nondet36_Out-1097912742|, t1Thread1of1ForFork0_push_~stack.offset=t1Thread1of1ForFork0_push_~stack.offset_Out-1097912742, t1Thread1of1ForFork0_push_#res=|t1Thread1of1ForFork0_push_#res_Out-1097912742|, t1Thread1of1ForFork0_push_#t~ret38=|t1Thread1of1ForFork0_push_#t~ret38_Out-1097912742|, ~#m~0.base=|~#m~0.base_In-1097912742|, t1Thread1of1ForFork0_push_~stack.base=t1Thread1of1ForFork0_push_~stack.base_Out-1097912742, t1Thread1of1ForFork0_assume_abort_if_not_~cond=t1Thread1of1ForFork0_assume_abort_if_not_~cond_Out-1097912742, t1Thread1of1ForFork0_push_#in~stack.base=|t1Thread1of1ForFork0_push_#in~stack.base_Out-1097912742|, t1Thread1of1ForFork0_~tmp~0=t1Thread1of1ForFork0_~tmp~0_Out-1097912742, t1Thread1of1ForFork0_push_~x=t1Thread1of1ForFork0_push_~x_Out-1097912742, ~#m~0.offset=|~#m~0.offset_In-1097912742|, t1Thread1of1ForFork0_#t~nondet46=|t1Thread1of1ForFork0_#t~nondet46_Out-1097912742|, t1Thread1of1ForFork0_assume_abort_if_not_#in~cond=|t1Thread1of1ForFork0_assume_abort_if_not_#in~cond_Out-1097912742|, t1Thread1of1ForFork0_push_#in~stack.offset=|t1Thread1of1ForFork0_push_#in~stack.offset_Out-1097912742|, ~#arr~0.base=|~#arr~0.base_In-1097912742|, t1Thread1of1ForFork0_#t~nondet45=|t1Thread1of1ForFork0_#t~nondet45_Out-1097912742|} AuxVars[] AssignedVars[t1Thread1of1ForFork0_push_#in~x, #pthreadsMutex, t1Thread1of1ForFork0_push_#t~nondet36, t1Thread1of1ForFork0_push_~stack.offset, t1Thread1of1ForFork0_push_#res, t1Thread1of1ForFork0_push_#t~ret38, t1Thread1of1ForFork0_push_~stack.base, t1Thread1of1ForFork0_assume_abort_if_not_~cond, t1Thread1of1ForFork0_push_#in~stack.base, t1Thread1of1ForFork0_~tmp~0, t1Thread1of1ForFork0_push_~x, t1Thread1of1ForFork0_#t~nondet46, t1Thread1of1ForFork0_assume_abort_if_not_#in~cond, t1Thread1of1ForFork0_push_#in~stack.offset, t1Thread1of1ForFork0_#t~nondet45] because there is no mapped edge [2020-10-26 00:07:27,169 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [632] [632] L1003-3-->L998-6: Formula: (and (<= 0 (+ |t2Thread1of1ForFork1_#t~ret50_In835350469| 2147483648)) (not (= (- 2) |t2Thread1of1ForFork1_#t~ret50_In835350469|)) (<= |t2Thread1of1ForFork1_#t~ret50_In835350469| 2147483647) (= |#pthreadsMutex_Out835350469| (store |#pthreadsMutex_In835350469| |~#m~0.base_In835350469| (store (select |#pthreadsMutex_In835350469| |~#m~0.base_In835350469|) |~#m~0.offset_In835350469| 0))) (= |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_In835350469| |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_Out835350469|) (= (+ t2Thread1of1ForFork1_~i~1_Out835350469 (- 1)) t2Thread1of1ForFork1_~i~1_In835350469) (= |t2Thread1of1ForFork1_reach_error_#t~nondet2.base_In835350469| |t2Thread1of1ForFork1_reach_error_#t~nondet2.base_Out835350469|)) InVars {t2Thread1of1ForFork1_reach_error_#t~nondet2.base=|t2Thread1of1ForFork1_reach_error_#t~nondet2.base_In835350469|, #pthreadsMutex=|#pthreadsMutex_In835350469|, ~#m~0.base=|~#m~0.base_In835350469|, ~#m~0.offset=|~#m~0.offset_In835350469|, t2Thread1of1ForFork1_#t~ret50=|t2Thread1of1ForFork1_#t~ret50_In835350469|, t2Thread1of1ForFork1_~i~1=t2Thread1of1ForFork1_~i~1_In835350469, t2Thread1of1ForFork1_reach_error_#t~nondet2.offset=|t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_In835350469|} OutVars{#pthreadsMutex=|#pthreadsMutex_Out835350469|, t2Thread1of1ForFork1_reach_error_#t~nondet2.base=|t2Thread1of1ForFork1_reach_error_#t~nondet2.base_Out835350469|, ~#m~0.base=|~#m~0.base_In835350469|, ~#m~0.offset=|~#m~0.offset_In835350469|, t2Thread1of1ForFork1_#t~post48=|t2Thread1of1ForFork1_#t~post48_Out835350469|, t2Thread1of1ForFork1_#t~ret50=|t2Thread1of1ForFork1_#t~ret50_Out835350469|, t2Thread1of1ForFork1_~i~1=t2Thread1of1ForFork1_~i~1_Out835350469, t2Thread1of1ForFork1_reach_error_#t~nondet2.offset=|t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_Out835350469|} AuxVars[] AssignedVars[#pthreadsMutex, t2Thread1of1ForFork1_reach_error_#t~nondet2.base, t2Thread1of1ForFork1_#t~post48, t2Thread1of1ForFork1_#t~ret50, t2Thread1of1ForFork1_~i~1, t2Thread1of1ForFork1_reach_error_#t~nondet2.offset] because there is no mapped edge [2020-10-26 00:07:27,245 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 00:07:27,245 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 00:07:27,247 INFO L168 Benchmark]: Toolchain (without parser) took 13632.18 ms. Allocated memory was 46.1 MB in the beginning and 159.4 MB in the end (delta: 113.2 MB). Free memory was 28.6 MB in the beginning and 118.0 MB in the end (delta: -89.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 16.1 GB. [2020-10-26 00:07:27,248 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 37.7 MB. Free memory was 20.5 MB in the beginning and 20.5 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:07:27,248 INFO L168 Benchmark]: CACSL2BoogieTranslator took 991.87 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 28.0 MB in the beginning and 34.8 MB in the end (delta: -6.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 16.1 GB. [2020-10-26 00:07:27,249 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.28 ms. Allocated memory is still 56.6 MB. Free memory was 34.8 MB in the beginning and 32.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-26 00:07:27,250 INFO L168 Benchmark]: Boogie Preprocessor took 40.62 ms. Allocated memory is still 56.6 MB. Free memory was 32.2 MB in the beginning and 30.6 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:07:27,250 INFO L168 Benchmark]: RCFGBuilder took 732.91 ms. Allocated memory is still 56.6 MB. Free memory was 30.6 MB in the beginning and 33.2 MB in the end (delta: -2.6 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2020-10-26 00:07:27,251 INFO L168 Benchmark]: TraceAbstraction took 11685.81 ms. Allocated memory was 56.6 MB in the beginning and 159.4 MB in the end (delta: 102.8 MB). Free memory was 32.6 MB in the beginning and 127.4 MB in the end (delta: -94.9 MB). Peak memory consumption was 92.2 MB. Max. memory is 16.1 GB. [2020-10-26 00:07:27,252 INFO L168 Benchmark]: Witness Printer took 97.52 ms. Allocated memory is still 159.4 MB. Free memory was 127.4 MB in the beginning and 118.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-10-26 00:07:27,256 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 37.7 MB. Free memory was 20.5 MB in the beginning and 20.5 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 991.87 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 28.0 MB in the beginning and 34.8 MB in the end (delta: -6.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.28 ms. Allocated memory is still 56.6 MB. Free memory was 34.8 MB in the beginning and 32.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.62 ms. Allocated memory is still 56.6 MB. Free memory was 32.2 MB in the beginning and 30.6 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 732.91 ms. Allocated memory is still 56.6 MB. Free memory was 30.6 MB in the beginning and 33.2 MB in the end (delta: -2.6 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11685.81 ms. Allocated memory was 56.6 MB in the beginning and 159.4 MB in the end (delta: 102.8 MB). Free memory was 32.6 MB in the beginning and 127.4 MB in the end (delta: -94.9 MB). Peak memory consumption was 92.2 MB. Max. memory is 16.1 GB. * Witness Printer took 97.52 ms. Allocated memory is still 159.4 MB. Free memory was 127.4 MB in the beginning and 118.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 5476 VarBasedMoverChecksPositive, 103 VarBasedMoverChecksNegative, 39 SemBasedMoverChecksPositive, 64 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.6s, 292 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.7s, 152 PlacesBefore, 40 PlacesAfterwards, 159 TransitionsBefore, 41 TransitionsAfterwards, 7732 CoEnabledTransitionPairs, 6 FixpointIterations, 30 TrivialSequentialCompositions, 89 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 25 ConcurrentYvCompositions, 6 ChoiceCompositions, 150 TotalNumberOfCompositions, 12409 MoverChecksTotal - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L927] 0 static int top=0; [L928] 0 static unsigned int arr[(800)]; [L929] 0 pthread_mutex_t m; [L930] 0 _Bool flag=(0); [L1012] 0 pthread_t id1, id2; [L1014] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arr={5:0}, flag=0, m={7:0}, top=0] [L1015] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arr={5:0}, flag=0, m={7:0}, top=0] [L997] 2 int i; [L998] 2 i=0 VAL [arr={5:0}, flag=0, m={7:0}, top=0] [L981] 1 int i; [L982] 1 unsigned int tmp; [L983] 1 i=0 VAL [arr={5:0}, flag=0, m={7:0}, top=0] [L953] COND FALSE 1 !(top==(800)) VAL [arr={5:0}, flag=0, m={7:0}, top=0] [L945] 1 return top; [L960] 1 stack[get_top()] = x [L937] 1 top++ [L963] 1 return 0; [L988] COND FALSE 1 !(push(arr,tmp)==(-1)) [L990] 1 flag=(1) VAL [arr={5:0}, flag=1, m={7:0}, top=1] [L983] 1 i++ VAL [arr={5:0}, flag=1, m={7:0}, top=1] [L998] COND TRUE 2 i<(800) [L1001] COND TRUE 2 \read(flag) [L945] 2 return top; VAL [arr={5:0}, flag=1, m={7:0}, top=1] [L967] COND FALSE 2 !(get_top()==0) [L941] 2 top-- [L945] 2 return top; [L975] EXPR 2 stack[get_top()] [L975] 2 return stack[get_top()]; [L998] COND TRUE 2 i<(800) [L1001] COND TRUE 2 \read(flag) [L945] 2 return top; [L967] COND TRUE 2 get_top()==0 [L970] 2 return (-2); [L1003] COND TRUE 2 !(pop(arr)!=(-2)) [L12] COND FALSE 2 !(0) [L12] 2 __assert_fail ("0", "stack_longest-1.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [arr={5:0}, flag=1, m={7:0}, top=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 146 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.3s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.8s, HoareTripleCheckerStatistics: 411 SDtfs, 517 SDslu, 853 SDs, 0 SdLazy, 449 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=688occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 1275 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 195 NumberOfCodeBlocks, 195 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 160 ConstructedInterpolants, 0 QuantifiedInterpolants, 43902 SizeOfPredicates, 5 NumberOfNonLiveVariables, 365 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 11 InterpolantComputations, 7 PerfectInterpolantSequences, 6/34 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...